I often think, how do they know what the colors.
I just watched a video on the sinking of the Szent Istvan, that real famous video of the BB that Italy sent torpedo boats after and it got filmed rolling over. It was in color, as well as black and white. How did they figure out these shades of gray are that color?
In a photo like this, well we know his shirt and pants are this shade of green, the tags are silver, can they make "best guesses" based on known shades of colors?
How do we know this guy was not blonde, or a red head?